CN108007075B - The defrosting de-icing method of vacuum freeze drier system and the system - Google Patents
The defrosting de-icing method of vacuum freeze drier system and the system Download PDFInfo
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- CN108007075B CN108007075B CN201710977171.3A CN201710977171A CN108007075B CN 108007075 B CN108007075 B CN 108007075B CN 201710977171 A CN201710977171 A CN 201710977171A CN 108007075 B CN108007075 B CN 108007075B
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- defrosting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
- F26B5/06—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum the process involving freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
Abstract
The invention discloses the defrosting de-icing methods of a kind of vacuum freeze drier system and the system, it is intended to solve that cooling driers effect is bad, and energy consumption is high, the bad deficiency of cold-trap room defrosting effect.The invention includes quick freezing repository, dryness storehouse, cold-trap room, heating component, cooling assembly, vacuumizing assembly, control assembly, dryness storehouse is connected to cold-trap room, refrigerator pipes are equipped in quick freezing repository, several layers heating plate is equipped in dryness storehouse, cold-trap coil pipe is equipped in cold-trap room, refrigerator pipes and cold-trap coil pipe pass through pipeline and are communicated to cooling assembly, heating plate is communicated to heating component by pipeline, cold-trap room is communicated to vacuumizing assembly by pipeline, sparge pipe is installed above cold-trap coil pipe in cold-trap room, several spray heads are installed on sparge pipe, spray head is arranged towards cold-trap coil pipe, cold-trap room lower end connected drainage pipe, fluid reservoir is connected to outside cold-trap room above sparge pipe.
Description
Technical field
The present invention relates to a kind of vacuum freeze driers, more specifically, it relates to a kind of vacuum freeze drier system
And the defrosting de-icing method of the system.
Background technique
Vacuum freeze drying is referred to as lyophilized, and is to freeze wet stock or solution under lower temperature (- 10 DEG C~-50 DEG C)
Form solid-state, then so that moisture therein is directly sublimed into gaseous state without liquid under vacuum (1.3~13 pa), finally make material
The dry technology of dehydration.It is food vacuum freeze drier group that frozen dried food, which produces most important equipment, mainly includes drying
Cabinet, heating component, vacuum subassembly, cooling assembly, control assembly.Due to freeze-drying be it is dry at low temperature, albumen will not be made
Matter generates denaturation, and the nutritional ingredient and fragrance ingredient of volatile component and heated denaturalization in substance lose very little, but can make micro-
Biology etc. loses biologos, and in substance 95%~99.5% moisture, the long shelf-life of product, after dry can be removed after dry
Volume, shape are basically unchanged, and for substance in spongy, the contact surface of no drying shrinkage, rehydration Shi Yushui is big, can be rapidly also at original shape
Shape.For the bioactivity product of those thermal stabilities difference, biochemistry based article, genetic engineering based article and blood product
Deng kept dry it is particularly suitable.But many cooling driers effects used at present are bad, energy consumption is high, cold-trap room defrosting effect
Fruit is bad.
Chinese patent notification number CN204522704U discloses a kind of board-like cooling driers, including passes sequentially through pipeline connection
Hard solder plate-type heat exchanger, device for drying and filtering, condenser, compressor, hot gas bypass valve and restricting element, hard solder plate-type
Be provided with air intlet and air outlet slit on heat exchanger, device for drying and filtering be located at hard solder plate-type heat exchanger and condenser it
Between, condenser includes motor and condensation net, and flabellum is provided on motor, and condensation net is located on the right side of motor, and condensation net is provided with one
Layer or more, the bottom of compressor is provided with stabilizer blade, and hot gas bypass valve is in parallel with restricting element.The board-like cooling driers have volume
Small, energy saving, the advantages of can make full use of refrigerant heat, improving dry air quality, but cooling driers effect is bad, energy
Consumption is big, and cold-trap room defrosting effect is bad.
Summary of the invention
The present invention overcomes cooling driers effect is bad, energy consumption is high, and defrosting effect bad deficiency in cold-trap room provides
The defrosting de-icing method of a kind of vacuum freeze drier system and the system, cold dryer system effect is good, and low energy consumption, cold-trap
Room defrosting effect is good.
In order to solve the above-mentioned technical problem, the invention adopts the following technical scheme: a kind of vacuum freeze drier system, packet
Quick freezing repository, dryness storehouse, cold-trap room, heating component, cooling assembly, vacuumizing assembly, control assembly are included, dryness storehouse and cold-trap room connect
It is logical, refrigerator pipes are equipped in quick freezing repository, several layers heating plate is equipped in dryness storehouse, are equipped with cold-trap coil pipe in cold-trap room, refrigerator pipes with
Cold-trap coil pipe passes through pipeline and is communicated to cooling assembly, and heating plate is communicated to heating component by pipeline, and cold-trap room passes through pipeline
It is communicated to vacuumizing assembly, sparge pipe is installed above cold-trap coil pipe in cold-trap room, several spray heads, spray head are installed on sparge pipe
It is arranged towards cold-trap coil pipe, cold-trap room lower end connected drainage pipe, is connected to fluid reservoir outside cold-trap room above sparge pipe.
Vacuum freeze drier system work when, first quick freezing repository is pre-chilled, then by material be placed into quick freezing repository into
Row freezes.Cold-trap room is pre-chilled by cold-trap coil pipe later, the heating plate in dryness storehouse is cooling, then will freeze the object completed
Material is packed into the heating plate of dryness storehouse, is then shut off dryness storehouse and cold-trap room, starts vacuumizing assembly, to dryness storehouse and cold-trap room
It is vacuumized, while heating component heats heating plate, to carry out vacuum freeze drying to the material in dryness storehouse.
After the completion of material freeze-drying, cooling assembly, heating component, vacuumizing assembly are closed, dryness storehouse is opened, material is taken out.It is finally right
The indoor cold-trap coil pipe of cold-trap carries out defrosting operation, and fluid reservoir conveys hot water to sparge pipe, and hot water sprays to cold-trap disk by spray head
Pipe carries out defrosting to cold-trap coil pipe outer wall, and the indoor water flow of cold-trap arranges Xiang Shuichi by drain pipe.This cold dryer system freeze-drying
Effect is good, and low energy consumption, and cold-trap room defrosting effect is good.
Preferably, being equipped with partition between dryness storehouse and cold-trap room, partition is equipped with several installation through-holes, on installation through-hole
Solenoid valve is installed, vertically arranged selfdraining valve is installed on drain pipe, selfdraining valve includes valve body, flap, is set in valve body
There are admission chamber and exhaust chamber, is equipped with the sealing ring of protrusion on valve interior wall between admission chamber and exhaust chamber, is set on sealing ring inner wall
Have a bearing surface being disposed obliquely outwards from top to bottom, flap be equipped with close to upper end outer wall be disposed obliquely outwards from top to bottom and with
The sealing surface of bearing surface adaptation, exhaust chamber is interior to install support spring, and support spring is connected to flap lower end, sealing surface and bearing surface
Between be equipped with ebb interval.
When dryness storehouse carries out freeze-drying operation to material, solenoid valve is opened, and dryness storehouse is connected to cold-trap room, dryness storehouse and cold-trap
Room is under negative pressure state, so that flap be made to be adsorbed upwards, together with sealing surface is closely abutted with bearing surface, makes to arrange automatically
Liquid valve is in close state.After the completion of material is cold dry in dryness storehouse, solenoid valve, cold-trap room and dryness storehouse separation are closed, at this time
Cold-trap room is in closed negative pressure state, and the sealing surface on flap is connected on the bearing surface of sealing ring；By fluid reservoir to spray
Liquid pipe conveys hot water, and cold-trap room pressure is less than external pressure, and hot water does not need other power and is pumped in cold-trap room, favorably
In reducing energy consumption, hot water sprays to cold-trap coil pipe by spray head, carries out defrosting to cold-trap coil pipe, at this time the suction function in cold-trap room
Lower Disc is closed by upward absorption；As cold-trap room pressure is continuously increased, flap is greater than upwards by downward active force
When active force, flap is opened downwards, and cold-trap indoor liquid is discharged downwards by selfdraining valve, if cold-trap coil pipe defrosting at this time
It has been completed that, cut off sparge pipe, opened cold-trap room, the defrosting for completing to complete cold-trap coil pipe to the discharge of cold-trap indoor liquid melts
Ice operation；If at this time cold-trap coil pipe defrosting also do not complete, difference in height effect under hot water from fluid reservoir flow into sparge pipe and from
Spray head sprays to cold-trap coil pipe and continues defrosting, and until defrosting is completed, opening cold-trap room completes to complete to the discharge of cold-trap indoor liquid
The defrosting ice-melt operation of cold-trap coil pipe.This structure setting is extracted hot water and is rushed using the indoor negative pressure of cold-trap as power
Frost greatly reduces energy consumption, improves defrosting effect.
Preferably, being equipped with installation set in exhaust chamber, gap, installation set are equipped between installation set outer wall and drain cavity wall
Several logical liquid baths are laid on side wall, installation set lower end connects locating cover set, and flap is mounted in installation set, and support spring connects
It connects between flap and locating cover set.Flap is movably arranged in installation set, steady reliable, and the setting of locating cover set is easy to support
The installation of spring positions.
Preferably, being laid with several vertically arranged via holes on sealing ring, the connection of via hole lower end can be pulled down
La Sai out is corresponded with via hole and is equipped with several pull rods, connection stay cord between pull rod and La Sai, drawstring on flap outer wall
Length be greater than the distance between pull rod and La Sai.When water flow is larger in cold-trap room, flap aperture is big, the flap amount of moving down
Increase, the pull rod being mounted on flap will draw to fill in by drawstring pulls out downwards via hole, to open via hole, accelerates cold-trap room
The discharge of interior water flow.
Preferably, being equipped with guide face on sealing ring inner wall above bearing surface, guide face is disposed obliquely inwards from top to bottom.
Guide face plays good guiding role to water flow, is conducive to the discharge of water flow.
Preferably, flap upper end is equipped with and the positioning column of sealing ring adaptation, positions and be laid with several on column outer wall
Flow-conveying groove, flow-conveying groove upper end extend to positioning column upper surface, and flow-conveying groove lower end extends to the sealing surface of flap.Positioning column is to flap
Good positioning action is played, the steady movement of flap is conducive to.
Preferably, heating component includes heating tank, expansion drum, cooling tank, three-way control valve, hot water circulating pump, heating
It is equipped with hot heat exchanger tube in tank, cold heat exchanger tube is equipped in cooling tank, pipeline connection, cold between heating plate outlet and cold heat exchanger tube import
Pipeline connects between heat transfer tube outlet and hot heat exchanger tube import, and pipeline connects between heat transfer tube outlet and expansion drum, on heating tank
End connects steam generator by pipeline, and heating tank lower end connects drainpipe, and cooling tank lower end connects cooling water inlet pipe, cooling tank
Upper end connects cooling water outlet tube, installs steam control valve on the pipeline between steam generator and heating tank, three-way control valve
Two imports pass through on the pipeline that pipeline is connected between hot heat exchanger tube and expansion drum respectively and hot heat exchanger tube and cold heat exchanger tube it
Between pipeline on, three-way control valve outlet end connect hot water circulating pump, hot water circulating pump by pipeline connection heating tube import；
Inflow temperature detector is installed on the pipeline connecting with heating tube import, is equipped with out on the pipeline connected with heating tube outlet
Coolant-temperature gage detector.
Hot water circuit pump startup when heating component works drives recirculated water circulation conveying in pipeline to exchange heat.Steam generation
Device conveys high-temperature steam into heating tank, heats to the water in hot heat exchanger tube；Cooling water is flowed into from cooling water inlet pipe and is cooled down
Tank cools down the water in cold heat exchanger tube.Expansion drum guarantees the water supply water temperature of hot water supply system, compensates the heat in pipeline
Loss.Steam control valve, three-way control valve are adjusted according to the water temperature value that inflow temperature detector detects.When the temperature detected
When degree is lower than required temperature value, increase the aperture of steam control valve, improve the heat transfer effect of hot heat exchanger tube, adjustment threeway is adjusted
The aperture of two imports of valve is greater than the import aperture for the three-way control valve connecting with hot heat transfer tube outlet and cold heat transfer tube outlet
The import aperture of the three-way control valve of connection.Similarly, when the temperature detected is higher than required temperature value, reduce steam and adjust
The aperture of valve reduces the heat transfer effect of hot heat exchanger tube, adjusts the aperture of two imports of three-way control valve, makes and hot heat transfer tube outlet
The import aperture of the three-way control valve of connection is less than the import aperture for the three-way control valve connecting with cold heat transfer tube outlet.Pass through tune
Whole correction makes the inflow temperature of heating tube reach the temperature value of needs, makes heating tube to the heating temperature of the heating plate in dryness storehouse
Control is accurate.The temperature difference detected by inflow temperature detector and leaving water temperature detector understands heating plate with can be convenient
The calorie value provided to material is needed, the vacuum convenient for preferably controlling material is cold dry.Hot water in heating tube to heating plate into
It exports and exports from heating tube after row heat exchange, and be pipelined in cold heat exchanger tube, be recycled.This heating component is to adding
The heating and temperature control of hot plate is accurate, ensure that the effect of material.
Preferably, vacuumizing assembly includes the first vacuum pump set and the second vacuum pump set being installed in parallel, the first vacuum
Unit includes vacuum sliding vane rotary pump, and the second vacuum pump set includes Vacuum Roots pump and vacuum sliding vane rotary pump, the first vacuum pump set of installation and
High-vacuum electromagnetic charge valve and vacuum pressure transmitter are mounted on the pipeline of second vacuum pump set.First vacuum pump set conduct
Forepump vacuumizes dryness storehouse in initial phase, and the second vacuum pump set is carried out in course of normal operation as working barrel
It vacuumizes, Vacuum Roots pump is more sensitive to steam, and the speed of evacuation is fast, and pressure is low.
A kind of defrosting de-icing method of vacuum freeze drier system, the first step, after the completion of material is cold dry in dryness storehouse,
Solenoid valve, cold-trap room and dryness storehouse separation are closed, cold-trap room is in closed negative pressure state at this time, and the sealing surface on flap abuts
On the bearing surface of sealing ring；Second step conveys hot water to sparge pipe, and cold-trap room pressure is less than external pressure, and hot water is not required to
It wants other power and is pumped in cold-trap room, cold-trap coil pipe is sprayed to by spray head, defrosting is carried out to cold-trap coil pipe, at this time in cold-trap
Indoor suction function lower Disc is closed by upward absorption；Third step, as cold-trap room pressure is continuously increased, flap is by downward
Active force when being greater than upward active force, flap is opened downwards, and cold-trap indoor liquid is discharged downwards by selfdraining valve, such as
If cold-trap coil pipe defrosting has been completed at this time, sparge pipe is cut off, opens cold-trap room, completes to complete to the discharge of cold-trap indoor liquid
The defrosting ice-melt operation of cold-trap coil pipe；If cold-trap coil pipe defrosting is not completed also at this time, hot water is from storage under difference in height effect
Flow container, which flows into sparge pipe and sprays to cold-trap coil pipe from spray head, continues defrosting, until defrosting completion, cold-trap room is opened, in cold-trap room
The defrosting ice-melt operation for completing cold-trap coil pipe is completed in liquid discharge.Hot water is taken out by the indoor negative pressure of cold-trap as power
Into cold-trap room, without other power, energy consumption is advantageously reduced, and defrosting effect is good.
Compared with prior art, the beneficial effects of the present invention are: cold dryer system effect is good, low energy consumption, cold-trap room
Defrosting effect is good.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the invention；
Fig. 2 is the cross-sectional view of selfdraining valve of the invention；
In figure: 1, quick freezing repository, 2, dryness storehouse, 3, cold-trap room, 4, heating component, 5, cooling assembly, 6, vacuumizing assembly, 7,
Control assembly, 8, refrigerator pipes, 9, heating plate, 10, cold-trap coil pipe, 11, sparge pipe, 12, spray head, 13, drain pipe, 14, fluid reservoir,
15, partition, 16, solenoid valve, 17, selfdraining valve, 18, valve body, 19, flap, 20, admission chamber, 21, exhaust chamber, 22, sealing
Ring, 23, bearing surface, 24, sealing surface, 25, support spring, 26, installation set, 27, logical liquid bath, 28, locating cover set, 29, via hole,
30, La Sai, 31, pull rod, 32, drawstring, 33, guide face, 34, positioning column, 35, flow-conveying groove, 36, heating tank, 37, expansion drum, 38,
Cooling tank, 39, three-way control valve, 40, hot water circulating pump, 41, hot heat exchanger tube, 42, cold heat exchanger tube, 43, steam control valve, 44,
Vacuum pressure transmitter, 45, inflow temperature detector, 46, leaving water temperature detector, 47, vacuum sliding vane rotary pump, 48, vacuum Roots
Pump, 49, high-vacuum electromagnetic charge valve.
Specific embodiment
Below by specific embodiment, and in conjunction with attached drawing, technical scheme of the present invention is further described:
Embodiment: a kind of vacuum freeze drier system (referring to attached drawing 1, attached drawing 2), including it is quick freezing repository 1, dryness storehouse 2, cold
Trap room 3, heating component 4, cooling assembly 5, vacuumizing assembly 6, control assembly 7, dryness storehouse is connected to cold-trap room, is set in quick freezing repository
There are refrigerator pipes 8, several layers heating plate 9 is equipped in dryness storehouse, is equipped with cold-trap coil pipe 10 in cold-trap room, refrigerator pipes and cold-trap coil pipe are equal
It is communicated to cooling assembly by pipeline, heating plate is communicated to heating component by pipeline, and cold-trap room is communicated to pumping very by pipeline
Empty component is equipped with sparge pipe 11 above cold-trap coil pipe in cold-trap room, is equipped with several spray heads 12 on sparge pipe, and spray head is towards cold
Trap coil pipe is arranged, cold-trap room lower end connected drainage pipe 13, is connected to fluid reservoir 14 outside cold-trap room above sparge pipe.Dryness storehouse and cold-trap
Partition 15 is equipped between room, partition is equipped with several installation through-holes, solenoid valve 16 is installed on installation through-hole, and installation is perpendicular on drain pipe
To the selfdraining valve 17 of setting, selfdraining valve includes valve body 18, flap 19, is equipped with admission chamber 20 and exhaust chamber in valve body
21, the sealing ring 22 of protrusion is equipped on valve interior wall between admission chamber and exhaust chamber, sealing ring inner wall is equipped with court from top to bottom
The bearing surface 23 of outer incline setting, flap are equipped with close to upper end outer wall and are disposed obliquely outwards and are adapted to from top to bottom with bearing surface
Sealing surface 24, support spring 25 is installed, support spring is connected to flap lower end, sets between sealing surface and bearing surface in exhaust chamber
There is ebb interval.It is equipped with installation set 26 in exhaust chamber, gap, installation set side wall are equipped between installation set outer wall and drain cavity wall
On be laid with several logical liquid baths 27, installation set lower end connects locating cover set 28, and flap is mounted in installation set, and support spring connects
It connects between flap and locating cover set.Several vertically arranged via holes 29, the connection of via hole lower end are laid on sealing ring
The drawing plug 30 that can be pulled out downwards is corresponded with via hole and is equipped with several pull rods 31 on flap outer wall, between pull rod and La Sai
The length of connection stay cord 32, drawstring is greater than the distance between pull rod and La Sai.Water conservancy diversion is equipped on sealing ring inner wall above bearing surface
Face 33, guide face is disposed obliquely inwards from top to bottom.Flap upper end is equipped with and the positioning column 34 of sealing ring adaptation, positions column outer wall
On be laid with several flow-conveying grooves 35, flow-conveying groove upper end extends to positioning column upper surface, and flow-conveying groove lower end extends to flap
Sealing surface.
Heating component includes heating tank 36, expansion drum 37, cooling tank 38, three-way control valve 39, hot water circulating pump 40, heating
It is equipped with hot heat exchanger tube 41 in tank, cold heat exchanger tube 42 is equipped in cooling tank, pipeline connects between heating plate outlet and cold heat exchanger tube import
It connects, pipeline connects between cold heat transfer tube outlet and hot heat exchanger tube import, and pipeline connects between heat transfer tube outlet and expansion drum, heating
Tank upper end connects steam generator by pipeline, and heating tank lower end connects drainpipe, and cooling tank lower end connects cooling water inlet pipe, cold
But tank upper end connects cooling water outlet tube, installs steam control valve 43, threeway tune on the pipeline between steam generator and heating tank
Two imports of section valve pass through on the pipeline that pipeline is connected between hot heat exchanger tube and expansion drum respectively and hot heat exchanger tube is changed with cold
On pipeline between heat pipe, three-way control valve outlet end connects hot water circulating pump, and hot water circulating pump connects heating tube by pipeline
Import；Inflow temperature detector 45 is installed, the pipeline with heating tube outlet connection on the pipeline connecting with heating tube import
On leaving water temperature detector 46 is installed.
Vacuumizing assembly includes the first vacuum pump set and the second vacuum pump set being installed in parallel, and the first vacuum pump set includes true
Empty sliding vane rotary pump 47, the second vacuum pump set include Vacuum Roots pump 48 and vacuum sliding vane rotary pump, install the first vacuum pump set and second very
High-vacuum electromagnetic charge valve 49 and vacuum pressure transmitter 44 are mounted on the pipeline of empty unit.
Vacuum freeze drier system work when, first quick freezing repository is pre-chilled, then by material be placed into quick freezing repository into
Row freezes.Cold-trap room is pre-chilled by cold-trap coil pipe later, the heating plate in dryness storehouse is cooling, then will freeze the object completed
Material is packed into the heating plate of dryness storehouse, is then shut off dryness storehouse and cold-trap room, starts vacuumizing assembly, to dryness storehouse and cold-trap room
It is vacuumized, while heating component heats heating plate, to carry out vacuum freeze drying to the material in dryness storehouse.
After the completion of material freeze-drying, cooling assembly, heating component, vacuumizing assembly are closed, dryness storehouse is opened, material is taken out.It is finally right
The indoor cold-trap coil pipe of cold-trap carries out defrosting operation, conveys hot water to sparge pipe by fluid reservoir, cold-trap room pressure is less than outer
Portion's pressure, hot water do not need other power and are pumped in cold-trap room, advantageously reduce energy consumption, hot water sprays to cold-trap by spray head
Coil pipe carries out defrosting to cold-trap coil pipe, and suction function lower Disc is closed by upward absorption in cold-trap room at this time；With cold-trap room
Interior pressure is continuously increased, and when flap is greater than upward active force by downward active force, flap is opened downwards, liquid in cold-trap room
Body is discharged downwards by selfdraining valve, if cold-trap coil pipe defrosting has been completed at this time, is cut off sparge pipe, is opened cold-trap room,
The defrosting ice-melt operation for completing cold-trap coil pipe is completed to the discharge of cold-trap indoor liquid；If cold-trap coil pipe defrosting does not have also at this time
It completes, hot water flows into sparge pipe and spray to cold-trap coil pipe from spray head from fluid reservoir under difference in height effect continues defrosting, Zhi Daochong
Frost is completed, and cold-trap room is opened, and the defrosting ice-melt operation for completing cold-trap coil pipe is completed to the discharge of cold-trap indoor liquid.
A kind of defrosting de-icing method of vacuum freeze drier system, the first step, after the completion of material is cold dry in dryness storehouse,
Solenoid valve, cold-trap room and dryness storehouse separation are closed, cold-trap room is in closed negative pressure state at this time, and the sealing surface on flap abuts
On the bearing surface of sealing ring；Second step conveys hot water to sparge pipe, and cold-trap room pressure is less than external pressure, and hot water is not required to
It wants other power and is pumped in cold-trap room, cold-trap coil pipe is sprayed to by spray head, defrosting is carried out to cold-trap coil pipe, at this time in cold-trap
Indoor suction function lower Disc is closed by upward absorption；Third step, as cold-trap room pressure is continuously increased, flap is by downward
Active force when being greater than upward active force, flap is opened downwards, and cold-trap indoor liquid is discharged downwards by selfdraining valve, such as
If cold-trap coil pipe defrosting has been completed at this time, sparge pipe is cut off, opens cold-trap room, completes to complete to the discharge of cold-trap indoor liquid
The defrosting ice-melt operation of cold-trap coil pipe；If cold-trap coil pipe defrosting is not completed also at this time, hot water is from storage under difference in height effect
Flow container, which flows into sparge pipe and sprays to cold-trap coil pipe from spray head, continues defrosting, until defrosting completion, cold-trap room is opened, in cold-trap room
The defrosting ice-melt operation for completing cold-trap coil pipe is completed in liquid discharge.Hot water is taken out by the indoor negative pressure of cold-trap as power
Into cold-trap room, without other power, energy consumption is advantageously reduced, and defrosting effect is good.
Above-mentioned embodiment is only a preferred solution of the present invention, not the present invention is made in any form
Limitation, there are also other variations and modifications on the premise of not exceeding the technical scheme recorded in the claims.
Claims (6)
1. a kind of vacuum freeze drier system, characterized in that including quick freezing repository, dryness storehouse, cold-trap room, heating component, refrigeration
Component, vacuumizing assembly, control assembly, dryness storehouse are connected to cold-trap room, and refrigerator pipes are equipped in quick freezing repository, if being equipped in dryness storehouse
Dried layer heating plate is equipped with cold-trap coil pipe in cold-trap room, and refrigerator pipes and cold-trap coil pipe pass through pipeline and be communicated to cooling assembly, heats
Plate is communicated to heating component by pipeline, and cold-trap room is communicated to vacuumizing assembly by pipeline, in cold-trap room above cold-trap coil pipe
Sparge pipe is installed, several spray heads are installed on sparge pipe, spray head is arranged towards cold-trap coil pipe, cold-trap room lower end connected drainage
It manages, is connected to fluid reservoir outside cold-trap room above sparge pipe；Partition is equipped between dryness storehouse and cold-trap room, partition is equipped with several installations
Through-hole installs solenoid valve on installation through-hole, vertically arranged selfdraining valve is installed on drain pipe, selfdraining valve includes valve
Body, flap, valve body is interior to be equipped with admission chamber and exhaust chamber, is equipped with the sealing of protrusion on valve interior wall between admission chamber and exhaust chamber
Ring, sealing ring inner wall are equipped with the bearing surface that is disposed obliquely outwards from top to bottom, flap close to upper end outer wall be equipped on toward
Under the sealing surface that is disposed obliquely outwards and is adapted to bearing surface, support spring is installed in exhaust chamber, support spring is connected to flap
Lower end was equipped with ebb interval between sealing surface and bearing surface；It is laid with several vertically arranged via holes on sealing ring, assists
Hole lower end connects the La Sai that can be pulled out downwards, corresponds on flap outer wall with via hole and is equipped with several pull rods, pull rod and drawing
The length of connection stay cord between plug, drawstring is greater than the distance between pull rod and La Sai；It is equipped with above bearing surface on sealing ring inner wall
Guide face, guide face are disposed obliquely inwards from top to bottom.
2. vacuum freeze drier system according to claim 1, characterized in that be equipped with installation set, installation in exhaust chamber
It covers and is equipped with gap between outer wall and drain cavity wall, several logical liquid baths, the connection of installation set lower end are laid on installation set side wall
Locating cover set, flap are mounted in installation set, and support spring is connected between flap and locating cover set.
3. vacuum freeze drier system according to claim 1, characterized in that flap upper end is equipped with and sealing ring adaptation
Positioning column, position column outer wall on be laid with several flow-conveying grooves, flow-conveying groove upper end extends to positioning column upper surface, flow-conveying groove
Lower end extends to the sealing surface of flap.
4. according to claim 1 to vacuum freeze drier system described in 3 any one, characterized in that heating component includes
Heating tank, expansion drum, cooling tank, three-way control valve, hot water circulating pump, heating tank is interior to be equipped with hot heat exchanger tube, is equipped in cooling tank
Cold heat exchanger tube, pipeline connection between heating plate outlet and cold heat exchanger tube import, between cold heat transfer tube outlet and hot heat exchanger tube import
Pipeline connection, pipeline connects between heat transfer tube outlet and expansion drum, and heating tank upper end connects steam generator, heating by pipeline
Tank lower end connects drainpipe, and cooling tank lower end connects cooling water inlet pipe, and cooling tank upper end connects cooling water outlet tube, steam generator
Steam control valve is installed, two imports of three-way control valve, which pass through pipeline respectively and are connected to heat, changes on the pipeline between heating tank
On pipeline on pipeline between heat pipe and expansion drum between hot heat exchanger tube and cold heat exchanger tube, the connection of three-way control valve outlet end
Hot water circulating pump, hot water circulating pump connect the import of heating tube by pipeline；It is equipped on the pipeline being connect with heating tube import
Leaving water temperature detector is installed on inflow temperature detector, with the pipeline of heating tube outlet connection.
5. according to claim 1 to vacuum freeze drier system described in 3 any one, characterized in that vacuumizing assembly packet
The first vacuum pump set and the second vacuum pump set being installed in parallel are included, the first vacuum pump set includes vacuum sliding vane rotary pump, the second vacuum machine
Group includes Vacuum Roots pump and vacuum sliding vane rotary pump, installs and is mounted on height on the pipeline of the first vacuum pump set and the second vacuum pump set
Vacuum electromagnetic charge valve and vacuum pressure transmitter.
6. a kind of defrosting de-icing method of vacuum freeze drier system described in claim 1, characterized in that the first step, material
After the completion of cold dry in dryness storehouse, solenoid valve, cold-trap room and dryness storehouse separation are closed, cold-trap room is in closed negative pressure shape at this time
State, the sealing surface on flap are connected on the bearing surface of sealing ring；Second step conveys hot water, cold-trap room pressure to sparge pipe
Less than external pressure, hot water does not need other power and is pumped in cold-trap room, cold-trap coil pipe is sprayed to by spray head, to cold-trap disk
Pipe carries out defrosting, and suction function lower Disc is closed by upward absorption in cold-trap room at this time；Third step, with cold-trap room pressure
It is continuously increased, when flap is greater than upward active force by downward active force, flap is opened downwards, and cold-trap indoor liquid passes through
Selfdraining valve discharges downwards, if cold-trap coil pipe defrosting has been completed at this time, cuts off sparge pipe, cold-trap room is opened, to cold-trap
The defrosting ice-melt operation for completing cold-trap coil pipe is completed in indoor liquid discharge；If cold-trap coil pipe defrosting is not completed also at this time,
Hot water flows into sparge pipe and spray to cold-trap coil pipe from spray head from fluid reservoir under difference in height effect continues defrosting, until defrosting is complete
At opening cold-trap room completes the defrosting ice-melt operation for completing cold-trap coil pipe to the discharge of cold-trap indoor liquid.
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| CN109323536A (en) * | 2018-11-15 | 2019-02-12 | 浙江冠峰食品机械有限公司 | A kind of vacuum freeze drier |
| CN110094926A (en) * | 2019-05-27 | 2019-08-06 | 南通远征冷冻设备有限公司 | A kind of uniform defrosting device and method |
| CN111121416B (en) * | 2019-12-30 | 2021-12-10 | 百瑞源枸杞股份有限公司 | Drying device and method for vacuum pulsation cold drying of medlar |
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| CN100494841C (en) * | 2006-02-20 | 2009-06-03 | 李志平 | Freezing drying machine |
| CN104296502A (en) * | 2013-07-19 | 2015-01-21 | 北京四环科学仪器厂有限公司 | Vacuum freeze drier refrigerating system capable of operating continuously and carrying out defrosting automatically |
| CN203928604U (en) * | 2014-04-29 | 2014-11-05 | 上虞冠峰食品机械有限公司 | A kind of food vacuum frozing drier |
| CN204522704U (en) * | 2015-03-17 | 2015-08-05 | 漳州震东机械有限公司 | A kind of board-like cooling driers |
| CN205878764U (en) * | 2016-05-25 | 2017-01-11 | 河源市兴睿食品科技开发有限公司 | Red separately cooling freezes drying equipment |
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Denomination of invention: Vacuum freeze-drying machine system and its frost and ice melting method Effective date of registration: 20230504 Granted publication date: 20191108 Pledgee: Dongguan Sub-branch of Zhejiang Shangyu Rural Commercial Bank Co.,Ltd. Pledgor: ZHEJIANG GUANFENG FOOD MACHINERY CO.,LTD. Registration number: Y2023980039535 |